Press the F5 key to open Advanced setup.
Click Web and Email → Email client protection and expand Antispam Address Lists. Click the slider bar next to Add addresses from own accounts to disable it and click OK.
Confirm that your own email address is not on the Global Whitelist. Remove your own email address from the Global Whitelist.
Confirm that your own email address is not on the Global Blacklist. If it is, remove your email address from the Global Blacklist.
Click the gear icon next to Antispam protection and select User's address list.
If your email address has the Exception rule, select that email address and click Remove. Click OK to close the window.